Question

GENTE ME AJUDEM PFVR É URGENTE PFVRRR

Answer 1

Resposta:

Explicação passo a passo:

$a)$

$7g^{2} -28=$

$7g^{2}-7\:.\:4=$

$7\:.\:(g^{2} -4)=$

$7\:.\:(g+2)\:.\:(g-2)$

$b)$

$5x^{5}+10x^{4}+5x^{3}=$

$5x^{3}\:.\:(x^{2} +2x+1)=$

$5x^{3}\:.\:(x+1)^{2}$

$c)$

$a^{2}m-m=$

$m\:.\:(a^{2} -1)=$

$m\:.\:(a+1)\:.\:(a-1)$

$d)$

$12a^{2} +60a+75=$

$3\:.\:(4a^{2} +20a+25)=$

$3\:.\:(2a+5)^{2}$

$Observacoes...$

$g^{2} -4=(g+2).(g-2)$

$x^{2} +2x+1=(x+1)^{2}$

$a^{2} -1=(a+1).(a-1)$

$4a^{2} +20a+25=(2a+5)^{2}$